Almost everyone except Tunisians & Egyptians need a visa. |
Libyan consulates issue visas are only after an invitation letter by a Libyan company (business or tourism company) has been issued.
Note you will also need a notarized translation of your passport, which has to be attached to the latter, usually in form of a stamp which is then filled out by a translator.
You can also get issued the visa at the airport in Tripoli, but in this case your guide will have to meet you there and have pre-arranged all the paperwork.